Biodexa Pharmaceuticals (NASDAQ:BDRX) ("Biodexa"), an acquisition-focused biopharmaceutical company, is developing MTX110 for the treatment of Diffuse Midline Glioma (DMG) in pediatric patients and for Recurrent Glioblastoma (rGBM) in adults; two aggressive brain cancers with universally poor prognoses.
The company says early trials of MTX110 in both cancers show promise in extending survival rates beyond those reported in previously published studies.
DMG tumors are highly aggressive grade IV tumors that exhibit a propensity to infiltrate the surrounding tissues. Commonly found throughout the brainstem, these tumors pose significant challenges in treatment. The median overall survival rate for individuals - typically children diagnosed with diffuse midline glioma is less than one year - generally ranges from eight to 11 months. A small percentage, approximately 10%, manage to survive for at least two years following diagnosis.
The distinctive feature of MTX110 is that it combines a water-soluble form of panobinostat with a CED device that delivers the drug directly to the brain tumor through a surgically implanted catheter and refillable pump. Biodexa says the drug achieves high drug concentrations within the tumor while limiting systemic exposure.
The proof-of-concept phase 1 clinical trial of MTX110 took place at the University of California San Francisco with patients battling DMG. The trial produced promising results with a median overall survival of 26 months, compared to a historical overall survival rate of 10 months. Similarly, a phase 1 trial involving newly diagnosed DMG patients at Columbia University Irving Medical Center also had encouraging outcomes, with MTX110 treatment increasing median overall survival to 16 months from a historical overall survival rate of 10 months.
The findings from this study will be presented at the 21st International Symposium on Pediatric Neuro-Oncology (June 28 - July 2, 2024), and the company may potentially continue developing the drug in this indication in a phase 2 study.
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